Pressure-regulator.



H. HILLEBRAND M. JACK.

PRESSURE REGULATOR. APPLIGATION FILED MAR.18, 1908.

Patented Aw. 20, 1909.l

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A 77'0HNEYS UNITED STATEPATEN T OFFICE.

HENRY HILLEBRAND AND MORETON JACK, OF NEW YORK, N. Y.

PRESSURE-RE GULATOR.

" Specification of Letters Patent.

Patented April 2o, 1909.

Application med Maren 1s, 190s. serial No. 421,896.

To all whom it 'may concern:

Ee it known that we, HENRY HILLEBRAND, a cltizen of the United States, and a resident of the city of New Yo1k,'borough'of Manhattan, 1n the county and State of New York, and MORETON JACK, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Pressure-Regulator, of which the following is a full, clear, and exact description.

This invention relates to reeulating devices suoli as are used for contro ing the op- 'eration of a motor driving a pump which supplies a reservoir.

T e object of the invention is to provide means for automatically starting and stop- )ing the operation vof the pump cont-rolled y the condition of the reservoir. Y

The specific object of the invention is to provide an arrangement in which the o eration of the electric motor is contro led through the medium of a main switch controlled by solenoid coils, which is itself controlled by a secondary or auxiliary switch op` erated directly by a pressure regulator o1" gage. The switch contacts and circuits are arranged in such a way that the instant that the pressure in the reservoir arrives at a Jredetermined oint, the main switch will be thrown, and the current through both switches will be instantly cut oif whatever niaybe the immediate condition of the reservolr.

A further object of the invention is to provide a circuit arrangement which will operate in such away that when a predetermined pressure exists in the reservoir, the motor will not only have its driving current cut off, but it will be short-circuited upon itself so that the electromotive force which it generates will have a braking effect upon it. In this way the motor is made to stop instantly, and there is no danger of the presl sure rising or` falling materiallyY below the predetermined points.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawing forming a part of this specification, which represents the apparatus and wiring', diagrammatically.

Referring particularly to the parts, 1 and ira conductor 10 which ."SWtCll ll.

2 represent the line wires from the mam which lead in to a double switch 8. From the switch a conductor 4 leads in to the binding post 5 of an electricl motor 6. From the motor a conductor leads through a switch 8 which is normally in the position shown, but which may be thrown over to a contact 9 on leads from the main In this way the regulating apparatus may be cut out of circuit, with the niotor remaining in circuit. The conductor 7 leads to the pivot 12 of the main switch, and this switch comprises a lever 13, the upper arm whereof is adapted to be thrown into either of its operative positions by means of a yoke 14 oi' insulating material, secured between two solenoid cores 15V and 16. These solenoid cores l5 and 16 are in longitudinal alinement with each other; the core 15 eX- tends toward the left and is controlled by a solenoid coil 17 and a similar coil 18 controls the core 16. The conductor 10 which has been referred to above, leads to a contact late 19 which is mounted on an insulating lock 20, and coperates with the lever 13. A similar contact plate 21 is mounted on the same block 20, and this contact plate also cooperates with the lever 13, as will be readily understood. The coil 17 is connected with the conductor 4, that is, with the-positive leg of the main circuit, by a conductor 22, and this conductor has a branch conductor 23 which is connected with the contact plate 21. From the conductor 1() near the switch 11 A-a conductor 24 connects with the coil 18.

The motor 6 is adapted to drive a pump 25 which charges a reservoir 26. From this rese ervoir 26 a main ipe 27 leads, which is connected by a suita le pipe 28 with a regulator 29. This regulator 29 is of common form, presenting a case 3() in which there vis mounted a fiexible diaphragm 31, on the under side of which pressure is exerted by the air which flows in to the case from the pipe28. To the diaphragm 31, which is of rubber or similar material, a Vvende-ally extending stem 32 is attached, which passes upwardly from the device, and around this stem a spring 33 is placed, which thrusts against the diaphragm and tends to hold it in an extreme low position. formed into an insulated bar S4, which bar has a' contact finger 35: extending laterally therefrom. This contact 'linger slides up and down on nn insulated bloc; :i6 having contact plates 3T, 3.8' and 39 thereupon. The

The upper end of this stem 32 is 2D tor- 1.0, switch-3, to the line wire 2.

50 L Vconductor 24,- conductor 10, vback to the line.

contact .37 is connected by a conductor 40 with the coil 17 and a short conductor 41 connects the contacts 37V and 38 as. indicated. The contact late 39 is connected bya con-y e ductor'42 with the coil 18. The insulated fiTheloperation of the apparatus will now be described: 'Under normal conditions, the

,jj maincircuit is closed throughthe motor, and 15 ieals'follows: from the line wire 1, through switch 3, conductor 4, binding post 5, through the motor 6, conductor 7 and switch 811,:l to the pivot'12 of the switch 11. From.

'this-point, through contact plate 19, conduc- W'hen `the 4pressure in the reservoir 26 and pipe 27 rises to the maxiinuin'limit, the finger 35 will strike the contact 37, at which time the fol- .lowing circuit will be made: conductor 22, coil 17, conductor .40, contact plate 37, linger 35, regulator bar 34. ,it rom this regulator 'bar' the current passes over a ilexible conduc- 43a, which constitutes a part of the conductor 43. From the conductor 43 the cur- 130' rent passes. along the' conductor 7 through the pivot `12 ofthe switch, and thenfroni this switch, by the conductor to the line Wire 2. The current iiowjng through this circuit.

energizes the solenoid coil 17 dra Ting' in the core thereof.L This throws the lever 13 .over to its opposite position, upon the con-l tact 21. This breaks the circuit through the 'motion and also through the solenoid coil 17.

- r Thev motor having been cut out in this Way,

40. the'punup stops, and the. pressure in the reservoir/t gradually tails;V The 'switch 11, however, will remain in this position.

.- When the pressure drops to the normal minimum linut, the contact linger 35 will touch' the contact plate 39. When this takes place, the following circuit will be 'madez conductor 4, conductors 22, 23,' contact21, lo 'er art of lever 13, pivot 12, conductor 7, on uctor 43, 43a, contact bar 34, r 35, contact 39, conductor 42, coil 18,

' It will be remembered that the switch 11 is then' in its oppositeposition from that in which it is represented in the figure. This closes the circuit through the coil v18, which becomesI energized and moves vthe switch back' to .the position in which it is shown in the figure; thatA is, the motor circuit will again be closed. lIn this way the motor will fl'automatically be started up when the pres- 'sure falls to the low limit, and will be automatically stop ed when the pressure rises abovethe high 'mit'. lf the pressure s hould` suddenly tall, by the bursting of a pipe or 65 other cause, below the low limit, theregula'- on theinsulated blockbetween the. con? generating current.

tor bar 34 will suddenly descend and the contact finger 35 Will make a circuit through the contact plate This circuit will be the same as in the irst instance, passing to the contact by the 'conductor 41 from the '70 plate 33. lt should be borne in mind that the switch 11 will bein the position shown in the ligure, for that. is the position to which the switch will be thrown as the contact iinger 35 crosses the Contact late 39'. Closing 75 the circuit through the coilp17 in this Way, of course, opens the circuit through the motor by throwing the lever 13 over to the contact plate 21. The yoke 14 is mounted to-slideupon a guide 14El which has stops 14b at itsv 8o ends which limit its movement.

Attention is called to the fact that when the main switch has opened to stop the motor a closed circuit is formed through the inotor 6, the conductor 7, switch lever 13, conl tact 21, conductor 23, conductor 22, back to the motor. The motor runs'iny this circuit on its momentum as a generator and quickly comes to a stop through the braking eliect of This braking action is 3Q very advantageous as it produces avery uniform regulation of the pressure. lf the mo tor were permitted to continue to revolve, the action oi. the pump would still continue and the pressure ivouldvcontinue to increase above the point at which the regulator acted..

' Vl'iththe circuits shown, the pump stops instantly. This is a very desirable inode of operation where the pressure used is small and the variation slight. Furthermore, it enables the device to be used witha comparatively small reservoir for the air. Attention is called to the fact that with this circuit arrangement, the circuit is never brokenat the controlling switch, that is, at the regulator switch, and this is highly advantageous for it prevents sparking at the-controllingswitch which would tend to burnaway the 'contact finger 35. As there isno sparking at this point, a very delicate contact tinge-r can be employed, which affords little or no resistance-to the movement of the stem of the regulator, and this feature operates to increase the delicacy and sensitiveness of the apparatus, ina-king it variations, such as a half pound to the square inch, which is common in beer pump operation.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. In apparatus of the class described, in combination, a reservoir, a motor, a pump driven thereby, a pressure regulator connected with said reservoir, a main switch having a lever, a closing coil and an opening coil for moving said lever, a contact coperating With said lever to close the main circuit through said motor, a second contact connected with said opening coil and cooperating especially useful in very low 115 tv th 'said lever to forni a normally lcircuit. `through said lever and said opening coil, a second normally eiaois incomplete incomplete circuit Ipassing through said leverV and said closing cjoil, and means for closing either 'oi'said nor- `Iiiallyincomplete circuits controlled by said pressure regulator.

2.- In apparatus'o the class described, in combination, a reservoir, a niotora pump driven thereby, a-pressure regulator connectl ed with said reservoir, a main switch having a lever, a contactcoperating with said lever rito close the inain circuit, saidfswitchv having Y -a second contact'coperating with s aid lever, a

closing coil independentofvv said contacts to move said lever, an opening coil` connected jcinbinatiOn, a reservoir, a inotor,

'controlling saidinaiii switch, a, main circuit- Inotor and said '-edfawith said reservoir,

switch is in openpo with said second contact to move said lever,l

and means for closing a circuit through either pressure regulator; v

3.l apparatus of the class described, in a 'pump connecta main sit/itch, an electromagnet having two cpposingcoils and g ofsaid'coils and said lever controlled by said'l 2Q l driven thereby, a pressure regulator normally closed through said switch andeXcluding-both of said coils, ni'ean's for .closing saidinain circuit through either of said coils actuated bysaid `pressure `regulator, and ineens for forming va closed .o en position passing through said "motor 'l w 'ereby said niotor brakesupon--itseli and v'stops said pump. l. U

4. In apparatus of tlic-class described, in combination, a reservoir, an electric pump driven thereby for' charging'said` reserf "voir, a main switch, a pressure regulator/coi:

nected with .said reservoir, contacts con-l trolled thereby, coils for opening andciosing said pipe, an electroin'agnet having a pair of Y cuit connecting the said coils passing around saidniotor and connecting With said niaincircuit to form a short rnotcr, 'ai

v 'y I i l..

Witt; the ott opposing coils, a switch operating With'vsaid lever, a main circuit pass-Z ing through said motor, a circuit i said contact with one of said through said motor,

lever, a contact cocoils and passing a second contact, a cir'- same with the' other of 55 connecting braking circuit through said motor, and nieans actuated by said regulator for closingyeither of said circuits.

v6. In apparatus of the class described, in

combination, anelectiic motor, a reservoir,

switch having an opening' coil,

tacts cooperating with saidy lever, aconducto'r conductor leading current to conductor leading from said In'ain conductor a pump actuated by said motor, main n a'lclosing coil, a lever controlled .by said coils, a pair of con- 70 connecting said motor With said lever, a main said motor, a

around said motor eonnecting'with onefof said contacts and connecting Withsaid opening coil, a pressure regulator, a conductor connecting said regulator with said opening coil, a conductor 'connecting saidclosin coil and the other of saidcontacts in parallel, a conductor leading from said pressure'regula-- tor and connecting to the conductor connectving said motor With said lever, anda conductor connecting said regulator With. said close 4ing coil.

VPi.In"apparatus' 'of the class described, in

combination, an `,electric motor, a pump operr-tedv thereby, e reservoir, .a pressure regulater, a main svritch having a lever, angopenj l`nig coil and aciosipg coil for'controlling said' lever, a main circuitnoirn said motor, said lever r a ci allypassingthrough d 'o' of said-ccn- .C' sa i opening coil said certa-cts and passing through said regulator, and a circuit passing throi gli said closing coil an correcting the with said regulator, d regulator f asv/'itch coen: j ith said niain in' testimony whereof We have signed 'our naines to this spe( .lisation in presence or -tvvo subscribing Witnesse HENRY HLLFIBRANB; M #BETON FA-CK.'

. Amann, A

vnaaizn Manssen.. 

